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Weichai 1003085784 Turbocharger Assembly
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Weichai 1003085784 Turbocharger Assembly


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Supplier NumberGZWWPB1003085784
Component TypeVariable Geometry Turbocharger (VGT) Assembly
Engine ApplicationWeichai WP12, WP13 Series
Turbo ConfigurationSingle Scroll, Water-Cooled Bearing Housing, Electronic VGT Actuator
Compressor Inducer DiameterApprox. 62 mm (Typical HX40/HE400VG Class)
Turbine Exducer DiameterApprox. 72 mm (Typical HX40/HE400VG Class)
Lubrication MethodEngine Oil Fed, Full Floating Bearings
Cooling MethodEngine Coolant Cooled Bearing Housing
Actuator TypeElectronic (HEUI / PWM Controlled)
Rotation DirectionClockwise (Viewed from Compressor Side)
Net Weight12.5 kg
Package Dimensions45 × 35 × 30 cm

Manufacturer No.

  • 1003085784
  • GZWWPB1003085784

OEM Part No.

  • 1003085784

Engine Part No.

  • Weichai WP12
  • Weichai WP13
  • Weichai WP10

Fitment Vehicles

  • Shacman X3000
  • Sinotruk Howo
  • FAW Jiefang J6P
  • Shaanxi Heavy Duty Truck
The Weichai 1003085784 turbocharger assembly is a variable geometry turbocharger (VGT) designed for Weichai WP12 and WP13 engine platforms. It utilizes a precision-machined compressor wheel and turbine wheel assembly mounted on a high-speed rotor supported by floating journal bearings. The turbine housing integrates a movable vane mechanism controlled by an electronic actuator to regulate boost pressure across the engine operating map. The bearing housing is water-cooled and oil-lubricated via engine supply. This unit is calibrated to OEM specifications for surge line margin, turbine efficiency, and transient response. It serves as a direct replacement for the original equipment turbocharger on specified engine configurations.